It works on MAC with Logic Pro... you just need to go to the AU manager (it pops up after giving an error) when you first start logic after the altiverb installation... once you are ther just check the altiverb box!!

DO NOT FUCKING DOWNLOAD. this guy above me is an idiot. so is the uploader. go fuck yourself. there are NO impulse responses. the torrent calims to have ALL impulse responses. oh ya. WELL WHERE THE FUCK ARE THEY? cuz there not in the IR folder. seriously wtf is this shit.

THANK GOD IM HERE. heres the solution for all mac users: for some STUPID reason, all of the impulse responses get installed in the wrong folder. why? i have NO idea. follow the instal instructions. when you open yur mixer (i used logic) you should get an error. open the AU manager and check the boxes like limoragni said. BUT WAIT, yur not done. open logic (or whatever) and load up Altiverb audio plugin. youll get an error. click the PLUS sign under the blue browser box and navigate to Library/application support/audio ease/trigger presets. select trigger presets and voila. whoever cracked this fucked up somewhere along the way